Bug#1133829: Context

I discovered this issue while trying to run the game 'Dangerous Waters' via
Steam. The game runs with extremely low performance because the system is
stuck with llvmpipe instead of using the hardware acceleration.

Performance impact:
The game 'Dangerous Waters' runs at 15 FPS on this setup, whereas it
achieves ~60 FPS on the same hardware under Windows 11. This confirmed
performance drop, combined with 'glxinfo' output, clearly indicates that
the system is failing to initialize hardware acceleration and is relying on
software rasterization (llvmpipe).

Note: The game 'Dangerous Waters' uses a 16-bit color depth.